Sources: 

Manchester United's end-of-season Asia trip was overshadowed by disciplinary issues after players, including Alejandro Garnacho, were reprimanded for making an inappropriate fan gesture. The trip, which followed a 3-1 victory over Hong Kong, was marked by player frustration and tension.
The squad, reportedly "fuming" about the tour, demanded an early return flight, reflecting their displeasure at being asked to travel post-season to Kuala Lumpur and Hong Kong. The players were allowed to enjoy themselves on the outbound flight, which departed four hours after a 2-0 Premier League win over Aston Villa.
Amid the unrest, winger Amad Diallo publicly apologized on social media after his mother was insulted by an "unhealthy individual," highlighting the emotional strain on the team.
"Manchester United players were 'fuming' at their end-of-season trip to Asia and enjoyed a boozy flight," reports WHAT HAPPENED?.
The traveling party included several players expected to leave the club next season, notably 20-year-old Alejandro Garnacho, who is valued at
£60 million by United. Garnacho has attracted interest from Napoli, Chelsea, and Aston Villa, fueling speculation about his future.
"The Argentinian is the subject of interest from Napoli, while Chelsea and Aston Villa have also been linked with a move for the 20-year-old," the reports state.
The disciplinary action against Garnacho and others underscores the challenges facing Manchester United as they navigate player management and squad stability during the off-season.
Sources: 

Manchester United reprimanded Alejandro Garnacho and other players for an inappropriate fan gesture during their Asia trip, which was marred by player discontent and tension. The squad, including those likely to leave, faced criticism after a 3-1 win in Hong Kong and amid transfer rumors surrounding Garnacho.